Which quadrant a point is in

Difficulty Stretch · Set vtoghc

Answer 1, 2, 3 or 4, counting anticlockwise from the top right.

Fill in what you can and press Check. Nothing you type is sent anywhere.

1
Which quadrant is (5, 18) in?
2
Which quadrant is (-15, 28) in?
3
Which quadrant is (-13, -25) in?
4
Which quadrant is (-20, -16) in?
5
Which quadrant is (-14, -15) in?
6
Which quadrant is (25, 9) in?
7
Which quadrant is (-7, -19) in?
8
Which quadrant is (28, -21) in?
9
Which quadrant is (-18, -21) in?
10
Which quadrant is (17, 26) in?
11
Which quadrant is (1, 11) in?
12
Which quadrant is (17, -24) in?
13
Which quadrant is (2, -11) in?
14
Which quadrant is (-27, 11) in?
15
Which quadrant is (-10, -6) in?
16
Which quadrant is (12, -27) in?
17
Which quadrant is (22, 28) in?
18
Which quadrant is (3, -2) in?
19
Which quadrant is (-27, -26) in?
20
Which quadrant is (22, 30) in?

What is in this set

The numbers in this set run from 1 to 30.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 72% of the problems: the minus signs were ignored.
Answers are a whole number.

Drawing 240 problems from this page produced 233 different ones, 97% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 6 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.